Sofa



FIG. 1 is a front perspective view of a sofa, showing my new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a side elevation view thereof taken from the right of FIG. 2;

FIG. 5 is a side elevation view thereof taken from the left of FIG. 2;

FIG. 6 is a top plan view thereof;

FIG. 7 is a front perspective view of another embodiment thereof;

FIG. 8 is a front elevation view thereof;

FIG. 9 is a rear elevation view thereof;

FIG. 10 is a side elevation view thereof taken from the right of FIG. 8;

FIG. 11 is a side elevation view thereof taken from the left of FIG. 8; and,

FIG. 12 is a top plan view thereof. 

CLAIM I claim the ornamental design for a sofa, as shown and described. 